Because Marvel clearly doesn't want my money, Quicksilver should be on at least both Avengers and X-Factor.
I don't get the logic behind Marvel's decisions, One time I think it was Dan Slott who wanted to use Nightcrawler as a member in his Avengers book yet Fraction and Marvel said no because he was in Uncanny despite him doing nothing there. It's not like if a Teleporter was on two books everyone would be life "Wtf how can he be in 2 books at once?"
I mean sure it will be cool to see Pietro with Wanda again but I prefer him hanging out with Polaris or you know Marvel could make him hang around with Speed a family tie they haven't used to it's potential.